Crack Length Effect on the Fracture Behavior of Single-Crystals and Bi-Crystals of Aluminum
Abstract
:1. Introduction
2. Methodology
2.1. Modeling
2.2. Characteristic Crack Length
2.3. Fracture Prediction
3. Results and Discussion
4. Conclusions
- The proposed approach based on the LEFM parameter and the virial stress tensor was not appropriate to describe the crack length effect, as shown in Figure 6a,b;
- The proposed approach based on the EPFM parameter demonstrated to be accurate to predict the crack length effect in single-crystals and bi-crystals, as evidenced in Figure 7a,b;
- The effect of the grain boundary was beneficial increasing the fracture resistance, viz., and , as demonstrated Figure 7b.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Specimen | (m) | (GPa) | (m) | (J/m) | (GPa) |
---|---|---|---|---|---|
Single-crystal | 4.050 | 4.2700 | 1.349 | 0.3637 | 3.9434 |
8.100 | 3.9098 | 1.247 | 0.6161 | 3.5934 | |
1.215 | 3.4300 | 1.256 | 3.3830 | 6.7960 | |
2.025 | 2.9600 | 1.370 | 3.1852 | 4.9659 | |
4.050 | 2.5600 | 1.407 | 2.8297 | 2.9978 | |
6.075 | 2.3800 | 1.396 | 2.6093 | 2.0493 | |
8.100 | 2.1300 | 1.428 | 2.3889 | 1.4288 | |
1.215 | 1.7436 | 1.333 | 1.8252 | 0.6480 | |
1.620 | 1.1619 | 1.222 | 1.1147 | 0.2297 | |
2.025 | 0.6291 | 1.720 | 0.8497 | 0.0609 | |
2.228 | 0.3432 | 1.222 | 0.3293 | 0.0125 | |
Bi-crystal | 4.050 | 3.5200 | - | - | - |
8.100 | 3.1800 | - | - | - | |
1.215 | 3.1000 | - | - | - | |
2.025 | 3.0400 | 5.869 | 14.0130 | 10.4158 | |
4.050 | 2.8400 | 5.623 | 12.5421 | 6.3113 | |
6.075 | 2.5500 | 6.222 | 12.4602 | 4.4782 | |
8.100 | 2.2800 | 6.063 | 10.8568 | 3.0459 | |
1.215 | 2.2318 | 2.237 | 3.9204 | 0.9497 | |
1.620 | 1.3525 | 2.395 | 2.5440 | 0.3471 | |
2.025 | 0.6654 | 2.174 | 1.1362 | 0.0704 | |
2.228 | 0.4012 | 1.723 | 0.5429 | 0.0161 |
(m) | (J/m) | (GPa) | Error | |
---|---|---|---|---|
Single-crystal | 5.97 | 1.33 | 6.18 | 5.6337 |
Bi-crystal | 3.45 | 9.61 | 6.18 | 1.6812 |
(m) | (J/m) | (GPa) | Error | |
---|---|---|---|---|
Single-crystal | 1.35 | 3.15 | 6.18 | 0.2400 |
Bi-crystal | 1.31 | 13.25 | 12.92 | 0.2348 |
Bi-crystal | 1.53 | 3.60 | 6.18 | 0.0095 |
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Velilla-Díaz, W.; Zambrano, H.R. Crack Length Effect on the Fracture Behavior of Single-Crystals and Bi-Crystals of Aluminum. Nanomaterials 2021, 11, 2783. https://doi.org/10.3390/nano11112783
Velilla-Díaz W, Zambrano HR. Crack Length Effect on the Fracture Behavior of Single-Crystals and Bi-Crystals of Aluminum. Nanomaterials. 2021; 11(11):2783. https://doi.org/10.3390/nano11112783
Chicago/Turabian StyleVelilla-Díaz, Wilmer, and Habib R. Zambrano. 2021. "Crack Length Effect on the Fracture Behavior of Single-Crystals and Bi-Crystals of Aluminum" Nanomaterials 11, no. 11: 2783. https://doi.org/10.3390/nano11112783